Schneider Electric – SR3XT141FU – Zelio Logic SR3 Discrete I/O Extension Module

The Schneider Electric SR3XT141FU is a 14-channel discrete I/O expansion module designed for use with Zelio Logic SR2/SR3 smart relays. Featuring 8 AC input channels and 6 relay outputs, this module operates at a wide AC voltage range of 100–240 V and delivers rugged performance in compact automation setups.

Key Features:

• Model: SR3XT141FU

• Brand: Schneider Electric (Zelio Logic series)  

• Input Channels: 8 discrete AC inputs (100–240 V AC), input impedance ~350 kΩ  

• Output Channels: 6 relay outputs (form A NO) supporting 24–250 V AC and 5–30 V DC  

  • Thermal current: 5 A on 2 outputs, 8 A on 4 outputs

  • Electrical durability: up to 500,000 cycles (IEC 60947‑5‑1)  

  • Mechanical life: 10 million operations  

• Supply Voltages: 100–240 V AC (85–264 V range), 50/60 Hz; built-in reverse-polarity protection  

• Control Logic Capacity: Supports up to 120-rung ladder logic when paired with SR3 relay base  

• Performance Metrics: Ladder cycle time of 6–90 ms; program backup retains up to 10 years at 25 °C; clock drift ~12 min/year  

• Response Times: Relay output: ON ~10 ms, OFF ~5 ms; Inputs with ladder: ~50 ms  

• Electrical Isolation & Protection: Rated for 4 kV impulse withstand; overvoltage category III; IP20 front, IP40 sides  

• Terminals: Screw-type (flexible/solid AWG 24–14); torque ~0.5 N·m  

• Operating Conditions: –20 to +55 °C; 95% RH non-condensing; Altitude ≤2000 m